DE522766C - Process for the preparation of green developable silver salt photographic emulsions - Google Patents

Process for the preparation of green developable silver salt photographic emulsions

Info

Publication number
DE522766C
DE522766C DEST46293D DEST046293D DE522766C DE 522766 C DE522766 C DE 522766C DE ST46293 D DEST46293 D DE ST46293D DE ST046293 D DEST046293 D DE ST046293D DE 522766 C DE522766 C DE 522766C
Authority
DE
Germany
Prior art keywords
green
preparation
silver salt
silver
photographic emulsions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEST46293D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DR ALBERT STEIGMANN
Original Assignee
DR ALBERT STEIGMANN
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DEST46277D external-priority patent/DE505012C/en
Application filed by DR ALBERT STEIGMANN filed Critical DR ALBERT STEIGMANN
Priority to DEST46293D priority Critical patent/DE522766C/en
Application granted granted Critical
Publication of DE522766C publication Critical patent/DE522766C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/035—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein characterised by the crystal form or composition, e.g. mixed grain
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/035—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein characterised by the crystal form or composition, e.g. mixed grain
    • G03C2001/03558—Iodide content

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Description

Verfahren zur Herstellung grün entwickelbarer photographischer Silbersalzemulsionen Gegenstand der Erfindung ist eine weitere Ausbildung des Verfahrens nach Patent 5o5 oi2 zur Herstellung grün entwickelbarer Silbersalzemulsionen.Process for the preparation of green developable silver salt photographic emulsions The invention relates to a further development of the method according to the patent 5o5 oi2 for the production of green developable silver salt emulsions.

Es hat sich gezeigt, daß man, anstatt von einer reinen jodsilberemulsion auszugehen, auch eine jodbromsilberemulsion oder Jodchlorsilberemulsion mit ungewöhnlich hohem Jodgehalt verwenden kann, deren Jodgehalt also über dem üblichen Jodgehalt liegt (6°/o Jodsilber). Für ausgesprochen grün entwickelbare Emulsionen ist sogar ein Jodsilbergehalt von weit über 5001o Jodsilber und weniger als 50°1o Bromsilber bzw. Chlorsilber anzuraten.It has been shown that, instead of starting from a pure iodine silver emulsion, one can also use an iodobromide silver emulsion or iodochlorosilver emulsion with an unusually high iodine content, the iodine content of which is higher than the usual iodine content (6% iodine silver). For emulsions that can be developed very green, an iodized silver content of well over 5001o iodized silver and less than 50 ° 1o silver bromide or chlorine silver is advisable.

Die stark jodhaltigen Jodbromsilberemulsionen werden genau so nachbehandelt, wie es im Patent 505 0i2 angegeben ist, erhalten also einen nachträglichen Zusatz von Chlorsilber.The iodine-containing silver iodobromide emulsions are treated in exactly the same way as specified in the 505 0i2 patent, that is, they are given a subsequent addition of silver chlorine.

Sowohl diesen als auch den nach Patent 5o5 oi2 hergestellten Emulsionen können Farbstoffsensibilisatoren zugegeben werden, z. B. Erythrosin oder Acridinfarbstoffe.Both these and the emulsions produced according to patent 505 oi2 dye sensitizers can be added, e.g. B. erythrosine or acridine dyes.

Beispiel ioo ccm io°/oige Gelatinelösung erhalten einen Zusatz von 0,35 g Bromkali und von 3,5 g Jodkali und darauf von 4 g Silbernitrat, gelöst in 30 ccm Wasser. Zu dieser Jodemulsion kommen 1,5 g Silbernitrat in 2o ccm Wasser und hernach 0,75 g Kochsalz und evtl. 2 ccm einer Erythrosinlösung i : i ooo.EXAMPLE 100 cc of 100% gelatin solution contain 0.35 g of potassium bromide and 3.5 g of potassium iodide and then 4 g of silver nitrate dissolved in 30 cc of water. Add to this iodine emulsion 1.5 g of silver nitrate in 20 cc of water and then 0.75 g of table salt and possibly 2 cc of an erythrosine solution i: 1000.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung grün entwickelbarer photographischer Silbersalzemulsionen nach Patent 505 012, dadurch gekennzeichnet, daß man von stark jodhaltigen jodbromsilberemulsionen oder Jodchlorsilberemulsionen ausgeht. PATENT CLAIM: Process for the production of green developable photographic silver salt emulsions according to Patent 505 012, characterized in that one starts from iodobromide silver emulsions or iodochlorosilver emulsions with a high content of iodine.
DEST46293D 1929-08-12 1929-08-15 Process for the preparation of green developable silver salt photographic emulsions Expired DE522766C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEST46293D DE522766C (en) 1929-08-12 1929-08-15 Process for the preparation of green developable silver salt photographic emulsions

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEST46277D DE505012C (en) 1929-08-12 1929-08-12 Process for the preparation of green developable iodized silver photographic emulsions
DEST46293D DE522766C (en) 1929-08-12 1929-08-15 Process for the preparation of green developable silver salt photographic emulsions

Publications (1)

Publication Number Publication Date
DE522766C true DE522766C (en) 1931-04-14

Family

ID=25994606

Family Applications (1)

Application Number Title Priority Date Filing Date
DEST46293D Expired DE522766C (en) 1929-08-12 1929-08-15 Process for the preparation of green developable silver salt photographic emulsions

Country Status (1)

Country Link
DE (1) DE522766C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2436180A1 (en) * 1973-07-27 1975-02-13 Polaroid Corp SILVER HALOGENIDE EMULSIONS WITH SUBSTITUTED HALOGENIDE AND PRODUCTS THAT CONTAIN THESE EMULSIONS
DE2806855A1 (en) * 1977-02-18 1978-08-24 Eastman Kodak Co PHOTOGRAPHIC SILVER HALOGENIDE EMULSION
EP0497363A1 (en) * 1991-02-01 1992-08-05 EASTMAN KODAK COMPANY (a New Jersey corporation) High bromide chloride containing silver iodohalide emulsions exhibiting an increased proportion of iodide
EP0497362A1 (en) * 1991-02-01 1992-08-05 EASTMAN KODAK COMPANY (a New Jersey corporation) High chloride silver iodohalide emulsions containing an increased proportion of iodide

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2436180A1 (en) * 1973-07-27 1975-02-13 Polaroid Corp SILVER HALOGENIDE EMULSIONS WITH SUBSTITUTED HALOGENIDE AND PRODUCTS THAT CONTAIN THESE EMULSIONS
DE2806855A1 (en) * 1977-02-18 1978-08-24 Eastman Kodak Co PHOTOGRAPHIC SILVER HALOGENIDE EMULSION
EP0497363A1 (en) * 1991-02-01 1992-08-05 EASTMAN KODAK COMPANY (a New Jersey corporation) High bromide chloride containing silver iodohalide emulsions exhibiting an increased proportion of iodide
EP0497362A1 (en) * 1991-02-01 1992-08-05 EASTMAN KODAK COMPANY (a New Jersey corporation) High chloride silver iodohalide emulsions containing an increased proportion of iodide
US5238804A (en) * 1991-02-01 1993-08-24 Eastman Kodak Company High bromide chloride containing silver iodohalide emulsions exhibiting an increased proportion of iodide
US5288603A (en) * 1991-02-01 1994-02-22 Eastman Kodak Company High chloride silver iodohalide emulsions containing an increased proportion of iodide
US5378599A (en) * 1991-02-01 1995-01-03 Eastman Kodak Company High bromide chloride containing silver iodohalide emulsions exhibiting an increased proportion of iodide

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